Everyone wore Mao badges. There was a brisk
trade in badges from different places with different motifs. In
general, Mao faces left on badges, symbolizing the leftist movement.
On these five badges, look for:

Sunflowers
(which always face the sun of Mao)

Nanjing Bridge, a major structure completed in 1968

Tiananmen Gate (Gate of Heavenly Peace), the political center
of China